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Rigorous Science

Posts tagged physics

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Q&A Schwarzschild Metric in a universe with the same space time metric as that described in the orthogonal series, but with massive gravitons?

The universe described in the orthogonal series http://www.gregegan.net/ORTHOGONAL/00/PM.html is one, in which the minus sign in the space time interval is replaced with a plus sign. So this unive...

1 answer  ·  posted 4y ago by Anders Gustafson‭  ·  last activity 4y ago by Anders Gustafson‭

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Q&A Can multiple space habitats be joined by tubes?

I wanted to create an extremely large space city which will be made up of many different large space habitats of ringed and cylindrical varieties. Although each habitat will contain its own city o...

1 answer  ·  posted 4y ago by RandySavage‭  ·  last activity 4y ago by RandySavage‭

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Q&A Would "land assist" technology be possible in real life?

In the game Call of Duty: Advanced Warfare, characters wear exoskeletons with an ability called "land assist", which allows them to slow down their fall using a jet of compressed air (or some speci...

3 answers  ·  posted 4y ago by Raleigh‭  ·  last activity 4y ago by Raleigh‭

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Q&A How long to become a habitable planet

I am creating a world for Sci Fi story in which I am trying to have two non-tidally locked earth sized planets in a binary orbit around Alpha Centauri A. The only way I can think of this happening ...

0 answers  ·  posted 4y ago by user72655‭

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Q&A How would a bird's flight change entering the zero gravity axis of an O'neil cylinder?

This question on space stack begins to tackle how a bird could fly inside an O'Neill cylinder, https://space.stackexchange.com/questions/27665/can-birds-fly-inside-an-oneill-cylinder. Here is the ...

1 answer  ·  posted 4y ago by RandySavage‭  ·  last activity 4y ago by RandySavage‭

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Q&A Could a more convenient form of energy transfer/storage than electricity be possible?

I was thinking about the progress that has been made in terms of energy usage for e.g. transport purposes and noticed how the prominent source of energy had changed over time: first muscle power, t...

3 answers  ·  posted 5y ago by A Lambent Eye‭  ·  last activity 4y ago by A Lambent Eye‭

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Q&A Is it possible to ice skate on an ice moon/world?

If you found out a way to produce a smooth icy surface on an ice moon like Ganymede, Enceladus, or Callisto, what kind of challenges would someone face if they tried to start ice skating? I figured...

3 answers  ·  posted 5y ago by Sean Kindle‭  ·  last activity 4y ago by Sean Kindle‭

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Q&A Absorbing heat from unlikely places

Living in polar climates can be quite difficult, and staying warm can often be such an issue. But not anymore with the heat sponge! This nifty little organ draws heat from even the coldest water to...

5 answers  ·  posted 5y ago by Nick‭  ·  last activity 4y ago by Nick‭

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Q&A Liquid-breathing piloted craft

Let us assume at some time in the near future, medical science perfects a biologically safe liquid air solution. It can fill up the lungs of the adult human subject and they can breathe it potentia...

3 answers  ·  posted 4y ago by Jem Baraka‭  ·  last activity 4y ago by Jem Baraka‭

Question space biology physics
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Rigorous Science How to calculate the thickness of the ice layer of a frozen ocean planet/moon?

How do I calculate the thickness of the upper ice layer on cold ocean worlds like Europa, Enceladus, and Ganymede? I'm asking this for a programm I'm currently writing. The given/known quantities ...

4 answers  ·  posted 5y ago by TheDyingOfLight‭  ·  last activity 4y ago by TheDyingOfLight‭

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Q&A What would a darkness effect capable of blocking all electromagnetic radiation probably do?

(As of 2020, February, the 19th, 12:23, I have decided to use a different method than the one originally proposed. The method itself answers the question) Imagine a spell an effect of utterdarknes...

3 answers  ·  posted 4y ago by Davi‭  ·  last activity 4y ago by Davi‭

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Q&A Black hole as a storage device?

I'm writing a sci-fi story, and there is a giant autonomous computer planet that constantly gathers resources from around the universe using drones. It stores a super weapon at the core of the plan...

16 answers  ·  posted 4y ago by user69899‭  ·  last activity 4y ago by user69899‭

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Q&A Are (near) instant data transfers feasible on an intergalactic scale?

Inspired partially by this comment on one of my answers, I got to thinking on what the quickest way to communicate would be on an intergalactic scale. Say humans have colonised the galaxy, and use...

4 answers  ·  posted 4y ago by Plutian‭  ·  last activity 4y ago by Plutian‭

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Q&A Feasibility of a black-and-white FTL drive?

I have an idea for a faster-than-light spacecraft that I would like to run by the expert minds in this community for a plausibility check. Basically the interstellar ship itself is of unspecified d...

4 answers  ·  posted 4y ago by Jem Baraka‭  ·  last activity 4y ago by Jem Baraka‭

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Q&A Is it possible to place a permanent probe on Uranus?

Before anyone points the finger saying this is a tasteless joke, there are some actual good reasons to pick that specific planet for exploration among the giants in our solar system: Smallest mas...

2 answers  ·  posted 5y ago by Renan‭  ·  last activity 4y ago by Renan‭

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Q&A Asteroid in the asteroid belt suddenly gains the gravity of the earth

An entrepreneur has a dream. He wants to create the most amazing and magical amusement park in the solar system. He goes to investors with the blue prints of the park, and they think it's a good id...

4 answers  ·  posted 5y ago by William Oliver‭  ·  last activity 4y ago by William Oliver‭

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Q&A How can I create strong structures with a drone swarm?

Continuing from my previous questions about a swarm of millimetre-sized drones, I want them to be able to interlock or by some method form into strong functioning structures, like a gun or a baseba...

2 answers  ·  posted 4y ago by RandySavage‭  ·  last activity 4y ago by RandySavage‭

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Q&A Can I make my drone swarm quieter or Silent?

I have a character that achieves an ability similar to scattering and reforming or elemental swarming by controlling millimetre sized surveillance drones to morph into different shapes or disperse ...

3 answers  ·  posted 4y ago by RandySavage‭  ·  last activity 4y ago by RandySavage‭

Question physics
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Q&A Post-apocalyptic aircraft

I have a post-apocalyptic scenario, set in the ruins of an American metropolis with flooded streets. Boats are used most of the time, but aircrafts have advantages, for battle or if you have to get...

2 answers  ·  posted 4y ago by Cee Mon‭  ·  last activity 4y ago by Cee Mon‭

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Q&A A Nonlethal Time Dilation Field

I want a way to enclose an area (building-sized and on Earth, let's say) in a field that warps spacetime so that time appears to pass 100x slower within it. You don't need to explain how the field ...

10 answers  ·  posted 5y ago by Gilad M‭  ·  last activity 4y ago by Gilad M‭

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Q&A Would this drone structure work?

I had an idea for a swarm of tiny drones, the smallest being as small as fairy flies at 0.15mm long, that could form into shapes and structures, even mimic the shapes of living creatures. They wou...

2 answers  ·  posted 4y ago by RandySavage‭  ·  last activity 4y ago by RandySavage‭

Question physics technology
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Rigorous Science Factors that determine the geology of a planet (what factors determine the elemental composition of the planet)

This is my first world and I want to build in a way that is physically possible (if this is possible, otherwise make the necessary changes) for my civilization (which is mostly fleshed out) but I d...

1 answer  ·  posted 4y ago by A. Soreq‭  ·  last activity 4y ago by A. Soreq‭

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Q&A What would be best way to re-melt Mars' mantle and core to revive its magnetosphere

Missing magnetosphere on Mars keeps popping up. Most likely caused by Mars core being cold, mantle not bubbly enough. Mars mantle is dormant, core does not move. What would be good way to get it g...

24 answers  ·  posted 9y ago by Peter M. - stands for Monica‭  ·  last activity 4y ago by Peter M. - stands for Monica‭

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Q&A Are Alpha and Beta-Voltaics the solution to the energy storage problem in Scifi?

In Scifi there is often the issue that all the fancy technology like Mechas and Lasguns need a lot of energy. Chemical sources are limited by volumetric and regular power density. Batteries and cap...

2 answers  ·  posted 4y ago by TheDyingOfLight‭  ·  last activity 4y ago by TheDyingOfLight‭

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Rigorous Science How does one calculate the diameter of a 'space fountain'?

I need to know how wide the diameter of a space fountain's* particle stream is in relation to the mass it's trying to support. It would have to lift its mass at least 40000 kilometers. The vacuum...

2 answers  ·  posted 4y ago by justthisonequestion‭  ·  last activity 4y ago by justthisonequestion‭

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Rigorous Science Popping "vacuum bubbles" loudness

Stun-wizards specialize in blinding and deafening opponents at a distance. To do so, they can exert their magical power to manifest a spherical region of vacuum by essentially "telekinetically" pus...

3 answers  ·  posted 4y ago by Dragongeek‭  ·  last activity 4y ago by Dragongeek‭

Question physics magic
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Q&A Is an Earth-to-Moon missile technologically possible?

Given current capabilities, is it possible for a missile launched from the surface of the Earth to impact the surface of the Moon? I would imagine the same "rocket" used send stuff to the ISS coul...

1 answer  ·  posted 4y ago by luchonacho‭  ·  last activity 4y ago by luchonacho‭

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Rigorous Science Air resistance speed limits on a broomstick

I'm working on a tabletop roleplaying game about witches. I have most of the mechanics of broomsticks worked out, but I'm having trouble deciding on top speeds. Speed limits are not a result of how...

1 answer  ·  posted 4y ago by pyrrhicPachyderm‭  ·  last activity 4y ago by pyrrhicPachyderm‭

Question physics flight
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Q&A Orange Suns and Blue Jupiters

I am developing a fictional planetary system in which a large gas giant planet (slightly less than the mass of Saturn), has migrated into the habitable zone during the formational years of the syst...

1 answer  ·  posted 4y ago by Arkenstein XII‭  ·  last activity 4y ago by Arkenstein XII‭

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Q&A Feasibility of compressing matter to electron degeneracy

So, I have been a bit disappointed with the answers on how to store degenerate matter from my previous thread, and now I'm even wondering whether one can produce it at all, without invoking unreali...

1 answer  ·  posted 4y ago by CYCLOPSCORE‭  ·  last activity 4y ago by CYCLOPSCORE‭

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Q&A Constructing a doomsday machine by manipulating the Higgs Field?

I've been working on a sci-fi series set about 1000 years in our future. The discovery of an alien threat leads the ruling government to conceive of a doomsday machine, which they hope will be so p...

3 answers  ·  posted 4y ago by Geroditus‭  ·  last activity 4y ago by Geroditus‭

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Q&A Would it be possilble to light the dark side of a tidally locked planet using fiber optics from the right side?

Assume planetary-scale cables are easily constructed, and subsequently ignored. I am assuming these cables would run just under the surface of the planet from one side to the other for minimal mai...

1 answer  ·  posted 4y ago by Jerry‭  ·  last activity 4y ago by Jerry‭

Question planets physics light
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Q&A Could a mass made up of certain elements or compounds "disrupt" a star?

Inspired by this interesting question-- let's say that the universe was just really, really out to get a particular star, such as our sun. Is there a perfect cocktail where a mass significantly sma...

6 answers  ·  posted 4y ago by NegativeFriction‭  ·  last activity 4y ago by NegativeFriction‭

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Q&A Good explanation for why aliens can't build nuclear engines?

"Aliens used uranium and plutonium to generate energy for thousands of years. However, by the time they got into space exploration, they've used up every last bit of it. That's why they'll have to ...

7 answers  ·  posted 4y ago by justthisonequestion‭  ·  last activity 4y ago by justthisonequestion‭

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Q&A Will we need to replace conventional rockets to send manned missions further into space?

Currently, chemical rockets have taken men to Earth orbit and the moon by combusting rocket fuel to generate thrust. Even if we develop more efficient rocket fuels and can create significantly la...

4 answers  ·  posted 7y ago by Antonio Marmo‭  ·  last activity 4y ago by Antonio Marmo‭

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Rigorous Science What improvements in the human body will allow it to withstand critically low or high pressure?

My question: What is it that needs to be improved or added to the human body so that it can withstand critically (fatally) low and high (if, my genetically modified person is underwater or a very d...

5 answers  ·  posted 4y ago by French Thompson‭  ·  last activity 4y ago by French Thompson‭

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Rigorous Science Is this a plausible interstellar propulsion system?

Interstellar travel is hard and complicated, yet I want to have a plausible interstellar propulsion system for my setting. Rockets are out because of the rocket equation and the horrible top speeds...

1 answer  ·  posted 4y ago by TheDyingOfLight‭  ·  last activity 4y ago by TheDyingOfLight‭

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Q&A How many pillows would you need to survive a fall from a church tower?

The praised Dutch book "Koning van Katoren" features an 18 year old who wants to become king of his country of Katoren, which had been under the regency of half a dozen evil ministers for his whole...

10 answers  ·  posted 4y ago by KeizerHarm‭  ·  last activity 4y ago by KeizerHarm‭

Question physics gravity
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Q&A Could an enormous structure be used to attract rain by acting as an artificial mountain?

If it were possible to build a giant geodesic dome tens of miles in diameter, what effect would it have on nearby weather? If built in an arid climate like the Sahara or Australia, would it be li...

3 answers  ·  posted 4y ago by Stonecraft‭  ·  last activity 4y ago by Stonecraft‭

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Q&A Could a vehicle levitate through use of ultrasonic sound waves?

This is a bit of a continuation of my previous question, could a form of acoustic levitation be used as artificial gravity? In that question, I referenced how some scientists use acoustic levitat...

2 answers  ·  posted 4y ago by Cobbington‭  ·  last activity 4y ago by Cobbington‭

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Q&A How could two alternate realities "blend" at a single point in space time?

From: https://en.wikipedia.org/wiki/Multiverse The multiverse (or meta-universe) is a hypothetical set of various possible universes including the universe which we live in. Together, these u...

10 answers  ·  posted 6y ago by Len‭  ·  last activity 4y ago by Len‭

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Q&A Skysteading: How to build a flying city

I am building a city in the sky; it floats thanks to hot air balloons and hydrogen. The main issue I have is how to make it grow, as this is not some kind of giant structure to start, it is a small...

4 answers  ·  posted 4y ago by SilverCookies‭  ·  last activity 4y ago by SilverCookies‭

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Q&A I heard that water is a medium for heat exchange how would a water manipulator use vapor to control air via temperature?

From the superpower wiki I heard that vapor is a medium for heat exchange, but when I did some research on it I found that heat exchange might need a closed system. In a fictional world how would a...

2 answers  ·  posted 4y ago by TheGuradian‭  ·  last activity 4y ago by TheGuradian‭

Question physics
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Q&A How large can a flying insect get and still be able to walk upside down?

Given the perfect environment, denser atmosphere, oxygen rich, maybe lower gravity, how large can a flying insect get and still be able to walk upside down on a surface? This question starts to ta...

3 answers  ·  posted 4y ago by RandySavage‭  ·  last activity 4y ago by RandySavage‭

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Q&A How far should second star be in my binary system?

For a certain reason, I needed two habitable similar earth-like planets very close to each other. After various information gathering, I gave up on double planet and gas giant moons, because tidal ...

4 answers  ·  posted 4y ago by Failus Maximus‭  ·  last activity 4y ago by Failus Maximus‭

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Q&A How much damage would a cupful of neutron star matter do to the Earth?

Suppose we used SCP-261, the vending machine that produces anything, and ask for a cup of neutron star. The machine instantaneously produces this. Suppose also that the vending machine is located ...

8 answers  ·  posted 5y ago by Quadratic Wizard‭  ·  last activity 4y ago by Quadratic Wizard‭

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Q&A How plausible does the power source for this fictional giant robot sound?

Here is a big one for you engineering fans to chew on. First off, a little context: The giant robot in question is called Mazinger Z, considered to be fiction's first pilotable mecha, launching t...

2 answers  ·  posted 4y ago by Jacob Blaustein‭  ·  last activity 4y ago by Jacob Blaustein‭

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Q&A Impacts of a moon falling on an Earth-like planet?

In the world my friend and I are making, the dark lord makes one of the planets uninhabitable by causing a moon, about the size of our own, to fall on it. About 7000 years later, it is unnaturally ...

3 answers  ·  posted 4y ago by skout‭  ·  last activity 4y ago by skout‭

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Q&A Densest practical packing of protons vs. neutrons?

For background: I have some sci-fi technology based on sci-fi physics which depends on some fictional forces that interact differently with up quarks vs. down quarks. So, to get certain types of ef...

1 answer  ·  posted 4y ago by Logan R. Kearsley‭  ·  last activity 4y ago by Logan R. Kearsley‭

Question physics materials
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Rigorous Science Lagrange systems: What is the mass range for a gas giant if I want to place a earth-like planet on L4 and L5

I am wanting to make a 3 world lagrange system around a Sol analog star that includes 1 gas giant and 2 terrestrial worlds with large moons. I want the terrestrial worlds to have a similar gravity ...

2 answers  ·  posted 4y ago by skout‭  ·  last activity 4y ago by skout‭

Question planets physics